#!/usr/bin/env python3

# Copyright (c) 2022 CINN Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import unittest

from op_mapper_test import OpMapperTest

import paddle


class TestStackOp(OpMapperTest):
    def init_input_data(self):
        self.feed_data = {
            'x1': self.random([4, 3], 'float32'),
            'x2': self.random([4, 3], 'float32'),
        }

    def set_op_type(self):
        return "stack"

    def set_op_inputs(self):
        x = [
            paddle.static.data(
                name=var_name,
                shape=self.feed_data[var_name].shape,
                dtype=self.feed_data[var_name].dtype,
            )
            for var_name in self.feed_data.keys()
        ]
        return {'X': x}

    def set_op_attrs(self):
        return {"axis": 0}

    def set_op_outputs(self):
        return {'Y': [str(self.feed_data['x1'].dtype)]}

    def test_check_results(self):
        self.check_outputs_and_grads()


class TestStackOpAxisNegative(TestStackOp):
    def set_op_attrs(self):
        return {"axis": -1}


if __name__ == "__main__":
    unittest.main()
